kovatsch



No. 620,l52. Patented Feb. 28, I899.

T. KOVATSCH.

MACHINE FOR TURNING AND POLISHING cnookzn on STRAIGHT wodoEN RODS 0Bsmxs. (No Model.) (Application filed Oct. 5,1 3-) 2 shoets sheet I.

w [A a f I 8 c Q I ]l b ;m & 1 I 1 b 1 u k E 2 t i i I l E e 3 E 1 l i Fc gi jl y Patented Feb. 28, I899.

T. KUV ATSCH. MACHINE FOB TURNING AND POLISHING GEOOKEIJ 0R STRAIGHTWOODEN RODS 0R STICKS.

(Application filed Och 15, 1898.)

2 Shaets-8heet 2.

(No Model.)

NrTED STATES THOMAS KOVATSCI-I, OF

FRANZ DO RF, AUSTRIA-HUN GARY.

MACHINE FOR TURNING AND POLISHING CROOKED OR STRAIGHT WOODEN RODS ORSTICKS.

SPECIFICATION forming part of Letters Patent No. 620,152, dated February28, 1899. Application filed October 15,1898. Serial No. 693,690. (Nomodel.)

To (LZZ whom itmcty concern.-

Be it known that I, THOMAS KOVATSCH, a subject of the Emperor ofAustria-I-Iungary, residing at Franzdorf, in Krain, Austria-Hungary,have invented certain new and useful Improvements in Machines forTurning, Smoothing, and Polishing Crooked or Straight Round-FiguredWooden Rods or Sticks; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention has for its object when turning decorated circular rodsor sticks to avoid as much as possible the changing of the cutter andguide-chucks and to enable rods or sticks up to a certain range ofdiameter to be turned by a single cutter and a rest of a definitediameter; also, to enable crooked circular rods or sticks to be smoothedand polished by machinery.

The machine is shown in the accompanying drawings, in which Figure 1 isa section through B B of Fig. 3. Fig. 2 is a section through A A of Fig.1; Fig. 3, a front View; Fig. 4., a section through C C of Fig. 3. Fig.5 shows a guide-chuck; and Figs. 6 and 7 are a vertical section andplan, respectively, of the shaping-templet and rod or stick holder. Forthe sake of clearness the guide-chuck and cutter are omitted in Figs. 3and 4:.

The machine consists of a knife-head b, rotating in a seating a, made intwo or several parts, and on one side of the head I) is cast abelt-pulley 0, while the other side is provided with a ring-shapedrecess d, in which engages the concentric ring e, which at its outeredge surrounds the sliding ring g. The ring 9 is prevented from fallingout by the nut f and by means of the ribs h and screws 11 is connectedto a fork 7a. This fork is attached to the upper end of a bolt Z,rotatable in a vertical seat m, attached to the side of the seat a andcarrying at its lower end one arm n of a bell-crank lever, the other arm0 of which extends into a recess 19, made in the lower part of the seata, through which latter the shaping-iron templet q is carried.

The templet q, Figs. 6 and 7, has a-groove 1", corresponding to theshape of the cross-section to be given to the rod or stick, and engagingin the groove r is a round or ovalshaped stud 2;, fixed to the bottomside of the lever arm 0, and which by drawing along the templet q isforced to the left or right, according to the shape of the groove. Thismove ment is so transmitted by the bell-crank lever n 0, bolt Z, forkis, and sliding ring 9 t0 the ring 6 that the latter is forced out or inthe circular groove cl.

Adjustablyarranged radiallyin the cutterhead and passing through thering 6 are two or more guide-chucks knife-holders a. This ring e isprovided with openings or recesses at suitable intervals to receive thesaid guide-chucks and knife-holders and permit the backward and forwardmotion of the said ring without being obstructed thereby.

The guide-chucks t are hollow bodies, Fig. 5, which by means of springs12 within them and screws w, the heads of which bear against a plate 00,fixed in the knife-head, are forced toward the center in order toprevent the guide-chucks flying outward on the rotation of theknife-head. The knife-holder ii is also a hollow body, in which theknife y is fixed in the usual manner, and is also partially formed likea guide-chuck, as shown by Fig. 2.

In both sides of the guide-chucks tand also of the knife-holder a arearranged inclined slots .2, Fig. 1, in which slide projections z, fixedto the ring. If the ring 6 is moved in a horizontal direction-by meansof the beforementioned lever action, the guide-chucks t and theknifeholder u are forced toward or away from the center by means of theprojections z accordingly as the ring is forced inward or outward,which, as before mentioned, is dependent upon the groove 0".Consequently the shape determined by the templet is imparted by thisprocess to the rods or sticks being operated upon.

Therod or stick inserted between the guidechucks t and cutter y to beworked is suitably connected with the templet, for example, by dippingbetween two horns 4: and 5, supported on standards 6 7 8, Figs. 6 and 7,fastened on the templet q, in-order that it may receive the samemovement as the templet.

The slide-rests which are used for the polishing of curved rods orsticks are step-shaped on their polishing-surface in order to give a 2.and also one or more guide to the worked and also the raw surface of thearticle operated on.

The thickness of the shaving removed in the smoothing can be regulatedby the adjustment of the knife. Both the guide-chucks and knife-holdercan be fitted with file attachments, as may be desired.

The difference between the largest and smallest diameter to be workedwith the guidechucks and knife-holder of a certain diameter depends uponthe length of the slot 2 and extent of the movement of the ring 2, andconsequently this machine can be made as large as desired.

The above-described construction of guidechucks and knife-holder permitsof the-working and polishing of crooked circular sticks by machinery.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is- 1. In a machine for turning, smoothing and polishingcrooked and straight round-figured wooden rods or sticks, in combinationwith a knife-head b, rotating in a seating made in two or more parts,provided on one side with a belt-pulley c and on the other side with aring-shaped recesss d with a concentric ring 6 slidinghorizontally intosaid recess, the guidechucks and knife-holder operated by the said ring,a sliding ring 9 encircled by the outer edge of the said ring e heldtherein by means of a nutf, the ring g being connected to a fork k thebolt lot which is actuated by means of a bell-crank lever 41 o fixed toits lower end, one arm 0 of which projects into an opening 13 made inthe seating a and carries underneath it a projection s of any desiredform which engages in the groove 4*, corresponding to the shape to begiven to the article worked on; of a templet q passing through theopening p and connected in any suitable manner with the article worked,so that on the sliding through of the templet q the ring 6 is so actedupon that it is forced in or out of the recess in the knife-head 01according to the shape of the groove in the templet.

2. In combination with the knife-head, re cessed pulley, rings e and g,templet, and intervening and actuating mechanism, substantially asdescribed, the guide-cheeks t and knife-holders to consisting of hollowbodies adjustable radially in the knife-head b and passing through theconcentric ring e, which hollow bodies by means of springs U fixedtherein in any usual manner are pressed against the work, and which areprovided on their sides with inclined slots .2 in which slideprojections a fixed to the concentric ring, whereby on moving theconcentric ring a the guide and knife checks if u are forced inward orextended outward, and which guide-cheeks tfor the purpose of polishingare provided with polishing-pads on their contact-surfaces, suchsurfaces being if desired made stepshaped in order to be in contact withthe finished and raw part of the article worked.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

THOMAS KOVATSCH.

lVitnesses:

HENRY C. CARPENTER, FRANZ Nowoasnn.

